A functional wafer of the present invention is disclosed to solve manufacturing difficulties involved in the production of optical elements such as polycarbonate ophthalmic lenses. The rehydration fluid may engage and rehydrate the implant after the barrier is ruptured. Two first stop tabs protrude up from the bottom plate to abut against a first sidewall of the data storage device. Because a precise machine state is maintained error detection and recovery mechanisms may be built directly into register files of the system.